000 00296pam a2200109a 44500
082 _aIC-7728
_b-
100 _aH. A. Watson
245 1 _aEquipment for analyzing mine atmospheres with special reference to haldane type apparatus
260 _a
_b
_c
700 _aL. B. Berger
997 _aTR5325 C
999 _c405425
_d405425